Improvement in hydraulic and pneumatic motors for sewing-machines



. 4 Sheets--Sheet1 JAMES H. WELCH & ROSIA W. WELCH Hydraulic andPneumatic Motors for Sewing Machines.

N0. 121,441. Patented Nov 28,1871.

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Hydraulic and Pneumatic Motors for Sewing Machines.

N0. 121,44]. I Patented Nov- 28,1871.

4 Sheets-8heet 3. JAMES H. WELCH & ROSIA W. WELCHH Hydraulic andPneumatic Motors for Sewing Machines.

Patented Nov. 28,1871

- 4Sheets--Sheet ia JAMES H. WELCH -& ROSIA W. WELCH.

Hydraulic and Pneumatic Motors fcr Sewing Machines.

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UNITED STATES .PATEN 'T QFFIGE.

JAMES HAMPTON WELOH AND ROSIA WASHINGTON WELOH, OF GEORGETOWN,

DISTRICT OF COLUMBIA. I

IMPROVEMENT IN HYDRAULIC AND PNEUMATIC MOTORS FOR SEWING-MACHINES.

Specification forming part of Letters Patent No. 121,441, dated November28, 1871.

To all whom it may concern:

Be it known that we, JAuns HAMPTON WELOH and Rosm WASHINGTON WELCH, bothof Georgetown, District of Columbia, have invented a new and usefulHydraulic and Atmospheric Motive Power for Sewing and other Machinery,such as paint, drug, coflee, and mixingmills, knitting machinery,organs, &c.; and we hereby declare the following to be a full, clear,and exact description of the same, reference being had to theaccompanying drawing which represents a sewing-machine of the Grover &Baker manufacture, to which our motor is ap plied.

Figure 1 is a side elevation of a sewing-machine with our inventionattached. Fig. 2 is an end view of the same. Figs. 3, 4, 5, 6, and 7 aredetail sectional views of the same.

The objects of our invention are to produce a compact and cheap buteffective and powerful mechanism which can be readily applied to anysewing-machine or other machine of ordinary or suitable con struction,to wit: Machinery for knitting; for grinding and mixing drugs, paints,oils, coffee, &c.; for blowing organs and melodeons, 860. The nature ofour invention consists of a double acting, open ended, conicallytapering and circumferentially-perforated balanced valve, oscillating onfixed trunnions, in combination with a sewing-machine for operating thesame, substantially as hereinafter described. It further consists incombining a brake with the foregoing mechanism for instantly arrestingor for retarding the operation of the machine, as presently described.

The trunnions may be made solid instead of hollow, and grooved on theircircumference.

In the drawing, Arepresents the frame of a sewing-machine, to the legsof which are bolted or otherwise secured suitable bearings B, shown intwo parts, best seen in Fig. 3, where the legs are represented insections b b, and the bearings are secured by the bolts 0 0. Thehydrostatic or water-engine is secured to the bearings B B, through thesides of which the set-screws d d pass, which securely hold the trunnionD, around and upon which the cylinder E oscillates. The trunnion D isprovided with a number of ports, e 0, best shown in Figs. 4 and 5, forthe admission and discharge of the water which enters through the pipeF, that may be attached to a cistern or hydrant by a flexible tube, anddischarged at the opposite end F. The flow to or from the engine can becontrolled by the operator by a suitable cock and a handle, I, andthereby more or less pressure obtained, forming an efi'ectual brake. Anair-vessel, G, is placed close to the engine to make the flow of wateror air steady. A piston, H, and piston-rod h are connected to a suitablepin, h, on a bracket, J, which is secured to the fiy or balance-wheel K,and may be adjusted thereon to make a longer or shorter stroke of thepiston. The piston may be packed with any suitable packing so as to fitclosely. The cylinder may also be provided with a stuffing-box, L, forthe piston'rod. If preferred, the engine may be made double-actin g byhaving the side pipe M and a suitable partition in the trunnion. If itis desired to use these motors in a factory a main pipe may be arrangedwith branch pipes for each sewing-machine.

The great advantages of our motor are great simplicity in constructionand of course moderate cost; it is not dangerous, as steam would be, andalso less expensive, doing away altogether with boiler and fuel; it ismore reliable than electricity, springs, weights, and levers, and notliable to get out of order.

The plug or trunnion D, by its tapering form, is madeadjustable, therebymaking up for the wear.

In summer fans M may be attached and operated by a pulley andcross-belt, as shown in Fig. 1.

Having now described our invention, what we claim, and desire to secureby Letters Patent, 1s

The oscillating engine E having stationary trunnion D, constructedsubstantially as described.

JAS. H. WELOH.

Witnesses: ROSIA W. WELOH.

ALON ZO HUGHES, THEODORE O. BREoHT.

